Two novel compounds from Ardisia punctata Lindl / 药学学报

To study the chemical constituents of Ardisia punctata, compounds were isolated with a combination of multi-chromatography. Their structures were determined on the basis of spectral analysis and comparison to those of the known compounds. A 1,4-benzoquinone derivative and a alkylphenol were isolated from the petroleum ether extract of the roots of Ardisia punctata. Their structures were elucidated as 2-tridecyl-3-[(2-tridecyl-4-acetoxy-6-methoxy)-phenoxyl] -6-methoxy-1,4-benzoquinone (1) and 2-methoxy-4-hydroxy-6-tridecyl-phenyl acetate (2). The two compounds are both new.

Three new belamcandaquinones from Ardisia punctata / 药学学报

<p><b>AIM</b>To study the chemical constituents of Ardisia punctata.</p><p><b>METHODS</b>Compounds were separated with a combination of multi-chromatography. Their chemical structures were determined on the basis of spectral analysis and single crystal X-ray diffraction.</p><p><b>RESULTS</b>Three compounds were isolated from chloroform extract of the roots of Ardisia punctata. Their structures were elucidated as 2-tridecyl-3-[(2-tridecyl-3-acetoxy-4-methoxy-6-hydroxy) -phenyl]-6-methoxy-1, 4-benzoquinone (1), 2-tridecyl-3-[(2-tridecyl-4,6-dihydroxy) -phenyl]-6-methoxy-1,4-benzoquinone (2) and 2-tridecyl-3-[(2-pentadecyl-4,6-dihydroxyl) -phenyl]-6-methoxy-,4-benzoquinone (3).</p><p><b>CONCLUSION</b>The three compounds are new 1,4-benzoquinone derivatives.</p>

Chemical constituents from roots of Ficus hirta / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents from the roots of Ficus hirta.</p><p><b>METHOD</b>Compounds were isolated by chromatographic techniques on silica gel and HP-20 resin columns. Their structures were elucidated by chemical and spectroscopic methods.</p><p><b>RESULT</b>Ten compounds were identified as beta-sitosterol (1), stigmasterol (2), psoralene (3), 3beta-hydroxy-stigmast-5-en-7-one (4), 5-hydroxy-4', 6, 7, 8-tetramethoxy flavone (5), 4', 5, 6, 7, 8-pentamethoxy flavone (6), 4', 5, 7-trihydroxy-flavone (7), 3beta-acetoxy-beta-amyrin (8), 3beta-acetoxy-alpha-amyrin (9) and hesperidin (10).</p><p><b>CONCLUSION</b>The compounds 4, 5, 6 were obtained from this genus for the first time, and all the compounds were obtained from this plant for the first time.</p>

Chemical constituents from roots of Ardisia punctata / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents from the roots of Ardisia punctata.</p><p><b>METHOD</b>Compounds were isolated by chromatographic techniques on silica gel and Rp-HPLC column. Their structures were elucidated by chemical and spectroscopic methods.</p><p><b>RESULT</b>Twelve compounds were identified as 3-hydroxy-5-tridecyl-methyl phenyl ether (1), 5-pentadecyl-1, 3-benzenediol (2), 2-methoxy-6-tridecyl-1, 4-benzoquinone (3), 2-methoxy-6-pentadecyl-1, 4-benzoquinone (4), glutinol (5), ardisicrenoside A (6), ardisiacrispin B (7), 24-ethyl-5a-cholesta-7, 22(E)-dien-3-one (8), 24-ethyl-5alpha-cholesta-7, 22(E)-dien-3beta-ol (9), daucosterol (10), vanillin acid (11), tetratriacontanoic acid (12).</p><p><b>CONCLUSION</b>All the compounds were obtained from this plant for the first time.</p>

Effect of dan-shen, san-qi of different proportion on platelet aggregation and adhesion in normal rabbits / 中国中药杂志

<p><b>OBJECTIVE</b>To observe the effect of the crude extracts of Dan-shen root and San-qi of different proportion on platelet aggregation and adhesion in normal rabbits.</p><p><b>METHOD</b>With rabbits, ig. (4d, exsanguinated via carotid artery, percentage of platelet aggregation and adhesion was measured.</p><p><b>RESULT AND CONCLUSION</b>Aspirin (4.4 mg/Kg) could markedly inhibit platelet aggregation and adhesion in normal rabbit. The proportions of Dan-shen root/San-qi (10:0, 10:1, 10:3, 10:6, 1:10) could markedly inhibit platelet aggregation, among which 10:3 was the best. San-qi alone had little effect on aggregation. The proportions of Dan-shen root/San-qi (10:3, 10:6, 0:10) could markedly inhibit platelet adhesion, among which 0:10 was the best, and the proportions(10:0, 10:1, 1:10) had little effect.</p>

Chemical composition of fructus Liquidambaris--lulutong / 药学学报

<p><b>AIM</b>To study the chemical composition in the fruits of Liquidambar formana Hance.</p><p><b>METHODS</b>Various column chromatographic techniques were used to separate and purify the constituents. Their physical and chemical properties and spectral data were measured for structural elucidation.</p><p><b>RESULTS</b>Eleven compounds were isolated and identified as beta-sitosterol (1), 3-oxo-11 alpha, 12 alpha-epoxyleanan-28, 13 beta-olide (2), 3-oxo-12 alpha-hydroxy-oleanan-28, 13 beta-olide (3), 3 alpha-acetyloxy-25-hydroxyolean-12-en-28-oic acid (4), oleanolic acid (5), ursolic acid (6), daucosterol (7), betulonic acid (8), gallic acid (9), nonacosane (10) and n-triacontanoic acid (11).</p><p><b>CONCLUSION</b>Among the isolated constituents, compound 4 is new compound, compound 3 is firstly isolated from the natural product and compound 5, 6, 7, 9, 10 and 11 are isolated from LuLuTong for the first time.</p>